Young U.S. visitors pose for a photograph next to a vintage car in Havana March 16, 2016. (Photo by Ueslei Marcelino/Reuters)

Montreal Canadiens defenseman Arber Xhekaj (72) fights with Ottawa Senators forward Mark Kastelic (47) during the first period at the Bell Centre in Montreal, Quebec on October 4, 2022. (Photo by Eric Bolte/USA TODAY Sports)

A mahout splashes water on his elephant on a hot summer day in Ahmedabad, India on April 8, 2019. (Photo by Amit Dave/Reuters)

A Hong Kong Correctional Services Dog Unit (CSDU) officer demonstrates training at the CSDU training facility in Stanley, Hong Kong, China, 27 February 2018. The Hong Kong CSDU consists of 29 staff members divided across six dog teams. According to the department's latest figure from 2017, the average daily penal population of Hong Kong was 8,529. (Photo by Jérôme Favre/EPA/EFE)

A demonstrator gestures as she talks with a Lebanese army member during a protest as Lebanon marks the two-year anniversary of the August 2020 Beirut port explosion, in Beirut, Lebanon on August 4, 2022. (Photo by Mohamed Azakir/Reuters)

Lopez Cardona of Cuba and Oleksandr Khyzhniak of Ukraine appear inseparable in the 80kg semi-final on August 4, 2024, but it was Khyzhniak who progressed to the final. (Photo by Peter Cziborra/Reuters)

An idol of Hindu goddess Durga floats in water as devotees immerse the same in the River Kuakhai after the Durga Puja festival in Bhubaneswar, India, Saturday, October 24, 2015. The immersion of idols marks the end of the festival that commemorates the slaying of a demon king by lion-riding, 10-armed goddess Durga, marking the triumph of good over evil. (Photo by Biswaranjan Rout/AP Photo)

Thousands of species of amphibians are endangered and hundreds have already disappeared, but in recent years, a team of scientists and conservationists have re-discovered some of these “lost” species and uncovered previously unknown varieties. Here: Miniature glass frog. (Photo by Robin Moore)